Vaporizer



p 17, 1929- M. c. LOVE i,728,421

VAPORIZER Filed Oct. 20, 1928 2 Sheets-Sheet 1 M flea/e y Attarmgy Se t. 1 7, 1929. M. c. LOVE VAPORIZER Filed Oct. 20, 1928 Patented Sept. 17, 1929 ivinnnin oL nn LOVE, OF PHOENIX, ARIZONA vnroniznn n a n area Qctober 20, 1928. Serial n waiaasm The present invention relates to improvements in carbureting devices for internal combustion engines and has for its primary object to provide a vaporizer for positively and efficiently vaporizing the gasoline or other fuel pi'iorto the admixture of the same Withair and previous to the discharge of the fuel into the intake manifold.

One of the important objects of the pres ent invention is to provide a vaporizer which includes a sectional exhaust manifold structure, a partition being arranged Within the exhaust manifold todivide the same into inner or outer communicating compartments, the inner compartment being adapted to have communication with the exhaust port of the internal combustion engine to receive,

exhaust gases therefrom, a coiled pipe scction being arranged W thin the outer chainher for communication atone end W th a fuel supply pipe, the other end being adapted to have communication NVllZll a vaporized :tuel

outlet pipe that enters the intake manifold, .tvherehy the fuel will be subjected to the exhaust gasesentering the outer chamber from the inner chamber of the manifold toelfect the vaporization of the fuel prior to its discharge into the intake manifold, Where the same co-mingles with fresh .air.

A further object is to provide a vaporizer of the above mentioned character which includes means for thermostatically controlling the vaporizationof the fuel in the coiled pipe arranged in the outer chamber of the exhaust manifold, said means being at all times eiiicientand reliable in its operation.

Still a further object is to provide a vaporizer of the above mentioned character hichinclndes manually operable means for controlling the supply of the vaporized fuel to ,the intake manifold, thereby preventing unnecessary aste of the fuel.'

A further object is to \providea vaporizer of the above iientioned character which is simple in construction, inexpensive, strong and durable, and further Well adapted to the purpose for which itis designed.

Qtherobjectsof the invention Will become .apparentasthe nature of the invention pronormal position of the slide valvesi Figure 8 is a side elevation of the [exhaust manifold, the outer sect on thereofbeing re- ,moved to more clearly illiistrate the slide valves and the actuating in'eanstherefor. Figure 4 is sectional view, taken approximately on the line of Figure 3: Figure 5 isasin ilar sectionftaken substantially upon are line 5-5 of Figure Figure (Sis a sectional View, taken ,onthe line,6 6 of Figure 2." i A Figure 7 is'a detail perspective View of one of ,the slide valve units;

In the drawings, wherein for the purpose of illustration "is sh'ovvn the preferred ,em- .bodiment of my invention, the inume'ral 'l designates generallyan internal coniliustiop engine, ,ivith'which is associatedlan intake n anifoldfi, thevertical legportion Prof which is flared at its open lower end t i r i eia air inlet. My improved vaporizer further includes the prov sion of sectional exhaust rin a rtiilnr t ranianifoldunit, is denoted generally by the reference character 4. v This exhaust manifold unit extends longitudinally along one side of the engine block, ,and is suppa t d th re by th a ta hing bra kete- A partition 6 i arranged Within the nani- 1301s 4, a dividing are s e into the ini er or outer con'ipartments orlchainhers 7 and B (resp ctively, the Qutep chambgr '8 being Open i i t innersid e The sections of the exhaust manifold are detachably secured together ,byitlie bolts 9 so t h inne i pe S de fl heflouterchambr has its edges abutting thepartitionfi.

The ,outer or rear sidepf the inner chambers 7 s formed w th a seriesofegrhaust gas inlet ,nipples 10, that afford communication bfi lweenthe respective cylindersfof the internal combustion engine 1 andthe inner-chamt v'caih ae im as ns x eme the exhaust gases from the engine to said inner chamber 7.

As is more clearly illustrated in Figures 4 and 5 of the drawings, the inner chamber is of rectangular shape in cross section, While the outer chamber 8 is of oval design. An exhaust pipe 11 extends from the rear end of the outer chamber 8 for discharging the exhaust gases from the exhaust manifold after the same has been utilized for the purpose of vaporizing the fuel that passes through a coiled pipe 12 that is arranged longitudinally within the intermediate portion of the outer chamber 8, as shown in Figure 2.

The forward end of the coiled pipe section 12 is formed with a laterally disposed nipple 13 that extends through an opening formed in the outer side of the chamber 8, and the outer end portion of the nipple is threaded for receiving thereon a suitable coupling 14 that afi ords a means for connecting the forward end of the fuel supply pipe 15 with the laterally disposed nipple associated wit-h the forward end of the coiled pipe section 12, the

' other end of said supply pipe having comv munication with a gasoline tank (not shown).

The rear end of the coiled pipe section 12 is provided with a similar nipple 16 that extends through the outer side of the rear end portion of the chamber 8 and: a vaporized fuel delivery pipe 17 is connected, at its rear end to the nipple 16, while the forward end of this delivery pipe extends into the intake manifold 2, at the juncture of the vertical leg portion 3 with the horizontal arm portion of said intake manifold, as clearly shown in Figure 1. The forward end of the vaporized fuel delivery pipe 17 may be constructed to novide a spray nozzle for discharging the vaporized fuel in the intake manifold in the intake manifold, in a fine spray so that the same may become more effectively atomized with the fresh air that is sucked to the manifold 2 during the operation of the engine 1.

A valve 18 of any conventional construction is arranged in the delivery pipe 17 for regulating the flow or supply of the vaporized fuel to the intake manifold and this valve is cont-rolled from a remote point through the mediumof the actuating rod 19 as also disclosed very clearly in Figure 1. The rod 19 preferably extends within easy access of the operator of the vehicle.

As is clearly disclosed in Figure 2, the partition 6 that extends longitudinally and vertically in the exhaust manifold 1 is formed at its respective ends with the exhaust gas outletopenings 20 and 21 respectively, the coiled pipe section 12 being located between these openings. These openings afford communication between the inner and outer chambers and for the purpose of controlling the vaporization of the fuel that passes through the coiled pipe section 12, I have provided a thermostatically operated device,

the construction of which will now be specifically described.

A substantially rectangular shaped slide valve 22 is arranged for slidable movement within the chamber 8, across the forward opening 20 and suitable guides 23 are provided for cooperation with the slide valve 22, the rear face of this slide valve having sliding engagement with the front face of the partition 6. A tubular stem 24: extends horigontally from the rear end of the slide valve 9 A similar slide valve 25 is arranged for slidable movement within the rear end portion of the chamber 8 across the opening 21, guides 26, similar to the guides 23 being provided for cooperation with the slide valve 25.

A tubular stem 27 extends horizontally from the forward end of the slide valve 25. These slide valves are operatively connected together for simultaneous operation through the medium of a connecting rod 28, the ends thereof being adjustably secured within the respective ho]low stems 24 and 27, by suitable set screws 29.

The control means for the sliding valves further includes the provision of a thermostatic lmk element 30 that 1S made of such material as to be very sensitive to heat and cold,

and which will readily expand and contract. One end of this the *mostatic link element 30 is fixedly secured within the chamber 8, as at 31, while the other end of this link is pivotally connected to the lower end of a lever 32, which lever is pivoted adjacent its lower end to the front side of the partition 6, as at 33, with reference more particularly to Figures 2 and 3 of the drawings. The upper end of the lever 32 is pivotally connected to the upper end of the arm 34, that extends upwardly from the rod 28.

The operation of my improved vaporizer may be briefly stated as follows:

Normally the valves 22 and 25 are arranged in the position shown in Figure 2, whereby the port 20 is uncovered and the port 21 is covered.

The exhaust gases will pass into the chamber 7 from the internal combustion engine through the inlet 10 and will be caused to travel forwardly in the chamber 7 and will enter the forward end of the outer chamber 8 through the port 20. The exhaust gases entering the outer chamber 8 will travel rearwardly and will completely envelop the coiled pipe section 12, through which the fuel passes, so as to effect the vaporization of the fuel in the pipe section 12, prior to the same icing discharged into the delivery pipe 17. The exhaust gases will then pass out through the exhaust pipe 11, and through the conventional muffler (not shown) into the atmosphere. In this manner, the fuel will be thoroughly vaporized before being admitted into the intake manifold, and when delivered to the intake manifold, the same will become atomized with the fresh air that is sucked upwardly through the vertical leg portion 3 so that the proper charge will be delivered to the internal combustion engine cylinders.

As the exhaust manifold becomes heated, the link 30 will expand, causing the actuation of the lever 82, whereby to operate the slide valves 22 and 25 simultaneously, in such a manner as to movethe valve 22 over the port 20 and simultaneously uncovering the port 21.

In this manner, the exhaust gases entering the chamber 7 Will leave through the port 21 and will be discharged into the exhaust pipe 11, without being caused to circulate around the coiled pipe section 12.

In this manner, the degree of vaporization of the fuel that is caused to How through the coil pipe section 12 will be regulated. ls heretofore mentioned, the valve 18 may be actuated by the op *ator of the vehicle to regu-- late the supply of the vaporized fuel to the intake manifold and when the motor is not running, the valve 18 is closed, thereby preventing the Waste of fuel. I

It will thus be seen from the foregoing description, that I have provided a carbureting device or vaporizer that can be readily and easily installed on an internal combustion engine without necessitating much alteration, and furthermore a vaporizer of this character will, at all times, be efficient and reliable in operation.

The use of a vaporizer of the above mentioned character will reduce the fuel consunnition necessary to operate the engine and furthermore, by admixing a highly vaporized fuel with fresh air, the efliciency of the operation of the enginewill be increased.

hile I have shown the preferred embodiment of my invention, it is to be understood that various changes in the size, shape and arrangement of parts may be resorted to, without departing from the spirit of the invention or the scope of the appended claims.

What is claimed is:

1. A vaporizer for internal combustion engines comprising in combination, an exhaust manifold, an intake manifold provided with an air inlet at its lower end, a partition dividing the exhaust manifold into inner and outor communicating chambers, the inner chamber being provided with inlet ports to receive the exhaust gases from the engine, an exhaust discharge pipe extending from the outer chamber, a coiled pipe section arranged within the outer chamber, a fuel supply pipe having communication wit-h the forward end of the coiled pipe section, a vaporized fuel delivery pipe affording communication between the rear end of the coiled pipe section and the intake manifold, said coiled pipe section being adapted to be heated by the exhaust gases entering the outer chamber, a

valve arranged in the vaporized fuel delivrear opening of the ery pipe for regulating the flow of the fuel to the intake manifold, and a thermostatically operated means for controlling the vaporization of the fuel passing through the coil pipe section, said last mentioned means comprising a slide Valve arranged in each end of the outer chamber, the partition being formed with exhaust gas openings in the ends thereof, a rod connecting the slide valves together manifold, an intake manifold provided with a fresh air inlet at its lower end, a partition arranged Within the exhaust manifold for dividing the same into inner and outer chambers, said partition being formed with exhaust gas openings at, the respective ends thereof, an exhaust gas discharge pipe extending from the rear end ofthe outer chamber, said inner chamber adapted for commui nication with the exhaust ports of an inter nal combustion engine for receiving the exhaust gases therefrom, a coiled pipe section arranged within the outer chamber between said exhaust openings in the partition, a fuel supply pipe having connection With the forward end of the coil pipe section, a vaporized fuel delivery pipe providing communication between the rear endof the intake manifold and coil pipe section, a valve arranged in the vaporized fuel delivery pipe for regulating the flow of the vaporized fuel to said intake manifold, a slide valve foreach of the openings in the partition, a rod operatively connecting the slidevalves together, one of the exhaust openings in the partition being opened when the other opening in the partition is closed to effect the discharge of the exhaust gases from the forward end of the inner chamber into the forward end of the outer chamber, whereby to cause said exhaust gases to circulate around the coil pipe section, entering the exhaust gas discharge pipe, and thermostatically operated means for automatically closing the front exhaust gas opening in the partition and uncovering the partition, for the purpose described.

In testimony whereof I aflix my signature.

MERLIN 0. LOVE. 

